Contributing Health Writer
Shoshana Pritzker is a registered dietitian and contributing writer at Yahoo Health, covering supplements, wellness gear and healthy eating. She's tested more than 100 supplements, from melatonin and biotin to ashwagandha and pre-workouts, along with more than a dozen body composition scales and several small kitchen appliances (ice cream makers were a particular highlight). Her recommendations are informed by more than 20 years of experience as a dietitian, journalist and mom. As a dietitian, sports nutritionist and nutrition communications expert in the supplement industry, Pritzker has spent her career helping people navigate the often-overwhelming world of supplements and wellness products. That clinical background shapes every product she evaluates, helping her look beyond the label to determine whether the science actually supports the claims. Her work has appeared in Verywell Fit, Eat This, Not That!, The Kitchn, Oxygen, Business Insider and other publications. When she's not testing supplements, she's putting them to good use at the gym — or, preferably, relaxing poolside with a cocktail alongside her husband and two sons.
Can the best biotin supplement really help strengthen hair, skin and nails? We tested 17 products from brands like Olly, Thorne and Nature Made, and dug into the research to see who might benefit most.
A registered dietitian tested 14 bathroom scales from brands like Withings, Hume and Renpho to find the most reliable options for tracking your progress at home. See our picks of the 9 best body composition scales for 2026.
Need to take the edge off? Here's the lowdown on brands like Thorne, Transparent Labs, Pure Encapsulations and more.
We consulted with experts and put 23 products to the test to find the best energy drink to power you through the afternoon slump.
The best pre-workout supplements help power you through your workout without leaving you jittery. Here, a registered dietitian tested 16 popular options to find which ones came out on top.
Nutrafol, Viviscal, Gaia and more: Get your hair health on track this year.
